Bangladesh’s capital Dhaka ranked fourth worst in the Air Quality Index (AQI) on Thursday morning.
The city had a score of 160 at 09:00am, indicating that the air quality was ‘unhealthy’.
A numerical value between 151 and 200 indicates that everyone may begin to experience health effects. Members of sensitive groups may experience more serious health effects.
Thailand’s Chiang Mai, Vietnam’s Hanoi and Pakistan’s Lahore occupied the first three spots respectively with scores of 206, 174 and 168 respectively.
Scores between 201 and 300 is classified as ‘very unhealthy’. If the score is between 301 and 500, then it is classified as ‘hazardous’.
The AQI, an index for reporting daily air quality, tells people how clean or polluted the air of a certain city is, and what associated health effects might be a concern for them.
Dhaka, one of the most densely populated cities in the world, has been grappling with air pollution for a long time. The air quality generally worsens during summer and shows signs of improvement in monsoon when the dust settles.
Detection of new cases has prompted the local administration to put eight houses and three shops under lockdown, Dr Hasan Shahriar, Chattogram divisional director of the Directorate General of Health Services (DGHS), said Wednesday night.
He said they collected 60 samples for test on Wednesday and three of them turned out to be positive.
The administration locked down two houses in Halishahar and Pahartali and six more in Sitakunda around midnight to prevent further transmission of the virus.